No just one mock up file. With this psd you will mock up your a4 magazine design anyway you like. Just paste your design and turn it. Light effects and reflection will automaticly change and render a perfect vision of your design. Avaliable 2 psd horizantal and vertical. You need just photoshop knowledge. With Photoshop 3d. You will see a tutorial in this video, please watch it and learn how to.
Its scalable to your request, no limit…
http://www.youtube.com/watch?v=faAxQRz8d0s